Sewing-machine attachment.



I No. 874,098. PATENTED DEC. 17, 1907 V R. P. MEES. SEWING MACHINEATTACHMENT.

APPLICATION FILED-TUNE 15. 1907.

IN VEN TOR. 12060"! F Mus s Fri-nu cm, llnsnmcran n c PATENT OFFICE.

ROBERT P. MEES, OF ST. LOUIS, MISSOURI.

SEWING-MACHINE ATTACHMENT.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed June 15, 1907. Serial No. 379,274.

To all whom it may concern;

Be it known that I, ROBERT P. MEES, citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Sewing-Machine Attachments, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming a part hereof.

My invention has relation to improvements in sewing machine attachments;and it consists in the novel construction and arrangement of parts morefully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a front perspective view of the lower endof a sewing machine arm showing my invention applied thereto; Fig. 2 isan elevation from one side of the presser-foot showing my inventionapplied thereto, a portion of the clamping plate being broken; Fig. 3 isan elevation of the opposite side of Fig. 2; Fig. 4 is a horizontalsection on line 44 of Fig. 2; and Fig. 5 is a bottom plan of Figs. 2 and3.

The object of my invention is to provide the presser-foot of anyconventional type of chain-stitch machine with a blade the purpose ofwhich is to trim the material at a predetermined distance from the lineof stitching, so that the edges of the sewed pieces of the fabric orgoods will present an even and smooth finish along the seam defined bythe stitch-line. In detail the invention may be described as follows:

Referring to the drawings, A, represents the lower end of a sewingmachine arm, P, the presser-foot bar, and 1, the presser-foot, the opentoe variety being preferably here shown.

N, represents the awl-bar, and n, the awl.

T, represents the throat plate, being provided with a slit 8 for theawl, the slit in the present instance being provided with a lateralenlarged portion .9 as shown (Fig. 1) for the reception of the blade 2.The blade is provided with a terminal head 2 which is set into arearwardly inclined recess or depression formed on the outer face of theinner toe of the presser-foot, the base of the recess being disposedparallel to the general length of the toe, or in other words, to theline of' stitching.

The outer face of the head 2 is flush with the corresponding face of theinner toe, the

the plate itself being secured to the presserfoot by screws 4. 4. Sincethe opposite faces of the head 2 are parallel, and since the inner faceof the head is flush or in the same plane with the inner face of theblade 2, it follows that said blade-face will be arallel to the toes ofthe presser-foot or to t e general line of stitching; but since theblade-face referred to makes an angle with the opposite or outer face ofthe blade, said outer face will be inclined to the toes or to thegeneral travel of the goods in the formation of the stitches. It isapparent that a shearing eflect will be exerted on the goods as it isfed beneath the presserfoot, the complement of the shearing blade edgebeing furnished by the longitudi- .nal edge of the recess 8 of the slit.5 of the throat-plate T. The front end of the clamping plate 3terminates a little short of the ad jacent end of the toe to which it issecured, forming a shoulder or offset 5, the operator using the outeredge as of the toe projecting beyond said offset as a guide in directingthe goods during the sewing operation. So that with the point as as aguide or index, the goods may always be sewed and trimmed at a uniformdistance from the edges of the pieces which are united, or they may besevered along any line marked thereon, the line being passed under thepoint at as the goods is advancing over the throat plate. I do not ofcourse wish to be understood that the blade or trimmer here shown isapplicable to only one form of machine, but it may be attached to anypresser-foot in the class of sewing machines above referred to; and theprinciple thereof is broad enough to include all lock-stitch sewingmachines whose character will permit them to avail themselves of thetrimmer qualified to meet special emergencies. In Fig. 1 the goods wouldbe fed to the left, between the resser-foot and throatplate, the bladesevering or trimming the material conjointly with the sewing operation.The blade being secured to the presserfoot, of course has no specialmovement imparted thereto, the goods being severed as the same is fedagainst the edge of the blade by the feed of the machine.

Having described my invention what I claim is:

1. In combination with an open toe presser-foot, a rearwardly inclineddepression or socket formed on the outer face of the inner toe, a bladereceived by said socket, and a clamping plate for securing the blade inposition, the front end of the plate being located a suitable distancefrom the front end of the toe and forming an offset with the side of thetoe to which said plate is secured, the edge of the toe projectingbeyond said ofiset serving as a guide for the fabric or materialoperated on, substantially as set forth.

2. In combination with a resser-foot toe, a rearwardly inclined bladedepending from and secured to the toe, and having one of its facesdisposed diagonally to the line of feed of the material operated on,substantially as set forth.

3. In combination with a presser-foot toe, a blade depending from andsecured to, and inclining rearwardly from said toe, the outer face ofthe blade being parallel to the line of feed of the material operatedon, and the inner face being diagonally disposed to such feed line,whereby a shearing effect is pro- 20 duced, substantially as set forth.

4. In combination with an open toe resser-foot having a rearwardlyinclined socket formed on the outer face of the inner toe, a bladehaving a terminal head received 25 by said socket, the inner face of theblade being disposed in the plane of the base of the socket, and theopposite face being disposed diagonally to said plane whereby a shearingeffect is produced, and means for securing 30

